How can geographical isolation contribute to speciation?
Answer and explanation
Correct answer: By reducing breeding between groups
Geographical isolation occurs when a physical barrier such as a mountain, river or distance separates members of one population. Because the separated groups meet and reproduce less often, gene flow between them decreases. Mutations, selection and other changes can then accumulate independently. Over many generations, reproductive differences may develop and contribute to speciation. Therefore A is correct; the other choices increase similarity or remove variation.
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What is the correct answer to this question?
By reducing breeding between groups
Why is this the correct answer?
Geographical isolation occurs when a physical barrier such as a mountain, river or distance separates members of one population. Because the separated groups meet and reproduce less often, gene flow between them decreases. Mutations, selection and other changes can then accumulate independently. Over many generations, reproductive differences may develop and contribute to speciation. Therefore A is correct; the other choices increase similarity or remove variation.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Evolution and speciation.
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